Puppet Class: tftp::server

Defined in:
manifests/server.pp

Overview

Class: t:server

Simple class to ensure the tftpd server package is installed

Parameters

address

IP address to bind the daemon process to. default: 0.0.0.0:69

ensure

Used to control the install and configuration or the clean up and unstinall of the tftpd server. default: present

create

Allow new files to be created. By default, tftpd will only allow upload of files that already exist. Files are created with default permissions allowing anyone to read or write them, unless the permissive or umask options are specified. default: false

listen

Run the server in standalone (listen) mode, rather than run from inetd. In listen mode, the timeout option is ignored, and the address option can be used to specify a specific local address or port to listen to. default: true

permissive

Perform no additional permissions checks above the normal system-provided access controls. When set to false, files and directories in tftproot must be world-readable. default: true

secure

Change root directory on startup. This means the remote host does not need to pass along the directory as part of the transfer, and may add security. When secure is true, exactly one tftproot directory should be specified. The use of this option is recommended for security as well as compatibility with some boot ROMs which cannot be easily made to include a directory name in its request. default: true

timeout

When run from inetd this specifies how long, in seconds, to wait for a second connection before terminating the server. inetd will then respawn the server when another request comes in. default: 900 (15 minutes)

tftproot

The directory that tftp content will be served from.

umask

Sets the umask for newly created files to the specified value. default: 377 (owner read-only)

verbosity

Set the logging verbosity value. default: 3

Variables

defaults_config_file

Full path to the defaults file used when starting the tftp daemon

group

Group ID to use for file and directory ownership

rc2file

Full path to the rc2.d file used to test if the tftp service is enabled

server_package

Name of the tftp server package

service_restart_command

Command used to restart the tftp service

service_start_command

Command used to start the tftp service

service_status_command

Command used to get the status of the tftp service

service_stop_command

Command used to stop the tftp service

mapfile

Name of the mapfile

user

User ID to use for file and directory ownership

Examples

class { 'tftp::server':
    ensure     => 'present',
    address    => '0.0.0.0:69',
    create     => true,
    listen     => true,
    permissive => true,
    secure     => true,
    umask      => '007',
    verbosity  => 3,
    tftproot   => '/srv/tftp',
}

Supported Operating Systems

* CentOS
* Debian
* Fedora
* RedHat
* OpenSUSE
* Ubuntu

Authors

Bennett Samowich <bennett@foolean.org>
Copyright (c) 2013 Foolean.org

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Parameters:

  • address (Any) (defaults to: '0.0.0.0:69')
  • create (Any) (defaults to: false)
  • ensure (Any) (defaults to: 'present')
  • listen (Any) (defaults to: true)
  • permissive (Any) (defaults to: true)
  • secure (Any) (defaults to: true)
  • timeout (Any) (defaults to: '900')
  • tftproot (Any) (defaults to: '/srv/tftp')
  • umask (Any) (defaults to: '377')
  • verbosity (Any) (defaults to: 3)


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# File 'manifests/server.pp', line 136

class tftp::server (
    $address    = '0.0.0.0:69',
    $create     = false,
    $ensure     = 'present',
    $listen     = true,
    $permissive = true,
    $secure     = true,
    $timeout    = '900',
    $tftproot   = '/srv/tftp',
    $umask      = '377',
    $verbosity  = 3,
)
{
    # Set the user for file ownership
    $user = $::operatingsystem ? {
        'centos'   => 'tftp',
        'debian'   => 'tftp',
        'fedora'   => 'tftp',
        'redhat'   => 'tftp',
        'opensuse' => 'tftp',
        'ubuntu'   => 'tftp',
        default    => 'root',
    }

    # Set the group for file ownership
    $group = $::operatingsystem ? {
        'centos'   => 'tftp',
        'debian'   => 'tftp',
        'fedora'   => 'tftp',
        'freebsd'  => 'wheel',
        'openbsd'  => 'wheel',
        'redhat'   => 'tftp',
        'opensuse' => 'tftp',
        'ubuntu'   => 'tftp',
        default    => 'root',
    }

    # Set the name of the tftp package to install
    $server_package = $::operatingsystem ? {
        'centos'   => 'tftp-server',
        'debian'   => 'tftpd-hpa',
        'fedora'   => 'tftp-server',
        'redhat'   => 'tftp-server',
        'opensuse' => 'tftp',
        'ubuntu'   => 'tftpd-hpa',
        default    => '',
    }

    # Set the name of the daemon defaults file
    $defaults_config_file = $::operatingsystem ? {
        'centos'  => '/etc/sysconfig/tftpd-hpa',
        'debian'  => '/etc/default/tftpd-hpa',
        'fedora'  => '/etc/sysconfig/tftpd-hpa',
        'redhat'  => '/etc/sysconfig/tftpd-hpa',
        'opensus' => '/etc/sysconfig/tftpd-hpa',
        'ubuntu'  => '/etc/default/tftpd-hpa',
        default   => false,
    }

    # Set the name of the init script
    $service_init_script = $::operatingsystem ? {
        'centos'  => '/etc/init.d/tftpd-hpa',
        'debian'  => '/etc/init.d/tftpd-hpa',
        'fedora'  => '/etc/init.d/tftpd-hpa',
        'redhat'  => '/etc/init.d/tftpd-hpa',
        'opensus' => '/etc/init.d/tftpd-hpa',
        'ubuntu'  => '/etc/init.d/tftpd-hpa',
        default   => false,
    }

    # Set the name of the init script template
    $service_init_script_template = $::operatingsystem ? {
        'centos'   => '/etc/init.d/tftpd-hpa.rh',
        'debian'   => '/etc/init.d/tftpd-hpa.deb',
        'fedora'   => '/etc/init.d/tftpd-hpa.rh',
        'redhat'   => '/etc/init.d/tftpd-hpa.rh',
        'opensuse' => '/etc/init.d/tftpd-hpa.suse',
        'ubuntu'   => '/etc/init.d/tftpd-hpa.deb',
        default    => false,
    }

    # Service status command
    $service_status_command = $::operatingsystem ? {
        default => '/etc/init.d/tftpd-hpa status',
    }

    # Service start command
    $service_start_command = $::operatingsystem ? {
        'ubuntu' => 'service tftpd-hpa start',
        default  => '/etc/init.d/tftpd-hpa start',
    }

    # Service stop command
    $service_stop_command = $::operatingsystem ? {
        'ubuntu' => 'service tftpd-hpa stop',
        default  => '/etc/init.d/tftpd-hpa stop',
    }

    # Service restart command
    $service_restart_command = $::operatingsystem ? {
        'ubuntu' => 'service tftpd-hpa restart',
        default  => '/etc/init.d/tftpd-hpa restart',
    }

    # Path to the rc2.d file
    $rc2file = $::operatingsystem ? {
        'debian' => '/etc/rc2.d/K01tftpd-hpa',
        'ubuntu' => '/etc/rc2.d/K01tftpd-hpa',
        default  => '',
    }

    # Set the name of the mapfile to use
    $mapfile = 'remap'

    # Fail if we aren't configured for this operating system
    if ( ! $server_package ) {
        fail( "Unknown OS '${::operatingsystem}', unable to select packages" )
    }

    case $ensure {
        'present': {
            # Install the package
            if ( ! defined( Package[$server_package] )) {
                package { $server_package:
                    ensure => 'latest',
                }
            }

            # Ensure the daemon group exists
            group { $group:
                ensure  => 'present',
                require => Package[$server_package],
            }

            # Ensure the daemon user exists
            user { $user:
                ensure  => 'present',
                comment => 'tftp daemon',
                gid     => $group,
                home    => $tftproot,
                shell   => '/bin/false',
                require => Group[$group],
            }

            # Configure the default file
            if ( $defaults_config_file ) {
                file { $defaults_config_file:
                    mode    => '0444',
                    owner   => 'root',
                    group   => 'root',
                    # lint:ignore:80chars
                    content => template( "${module_name}/${defaults_config_file}" ),
                    # lint:endignore
                    notify  => Service['tftp-service'],
                    require => Package[$server_package]
                }
            }

            # Make sure the tftproot exists
            if ( $create ) {
                $tftproot_mode = '0600'
            } else {
                $tftproot_mode = '0400'
            }
            file { $tftproot:
                ensure  => 'directory',
                owner   => $user,
                group   => $group,
                mode    => $tftproot_mode,
                recurse => true,
                require => [
                    Package[$server_package],
                    User[$user],
                    Group[$group],
                ],
            }

            # Copy in the init script
            file { $service_init_script:
                ensure  => 'present',
                owner   => 'root',
                group   => 'root',
                mode    => '0755',
                content => inline_template(
                    file (
                        # lint:ignore:80chars
                        "${settings::modulepath}/${module_name}/templates/${service_init_script_template}"
                        # lint:endignore
                    )
                ),
                require => Package[$server_package],
            }

            # Copy in the mapfile
            file { "${tftproot}/${mapfile}":
                ensure  => 'present',
                owner   => $user,
                group   => $group,
                mode    => '0400',
                content => inline_template(
                    file (
                        # lint:ignore:80chars
                        "${settings::modulepath}/${module_name}/templates/${tftproot}/${mapfile}",
                        "${settings::modulepath}/../private/${::fqdn}/${tftproot}/${mapfile}",
                        "${settings::vardir}/private/${::fqdn}/${tftproot}/${mapfile}"
                        # lint:endignore
                    )
                ),
                require => [
                    File[$tftproot],
                    Package[$server_package],
                    User[$user],
                    Group[$group],
                ],
            }

            # The package enables inetd, which we typically don't want.
            # Nevertheless, we'll use the listen parameter to determine
            # the desired state of the daemon and inetd.
            if ( $listen ) {
                # We'll start the daemon if we're not running inetd
                $service_state = 'running'

                case $::operatingsystem {
                    'centos','fedora','opensuse','redhat': {
                        exec { 'configure-tftpd-inetd':
                            path    => [ '/bin', '/usr/bin/', '/sbin' ],
                            command => '/sbin/chkconfig tftp off',
                            # lint:ignore:80chars
                            unless  => [ 'test `chkconfig --list | grep -c "tftp:.*off"` -eq 1' ],
                            # lint:endignore
                            require => Package[$server_package],
                        }
                    }
                    'debian', 'ubuntu': {
                        exec { 'configure-tftpd-inetd':
                            path    => [ '/usr/bin/', '/usr/sbin' ],
                            command => '/usr/sbin/update-inetd --disable tftp',
                            # lint:ignore:80chars
                            onlyif  => [ '/usr/bin/test -f /etc/inetd.conf && /usr/bin/test -f /usr/sbin/update-inetd' ],
                            # lint:endignore
                            require => Package[$server_package],
                        }
                    }
                    default: {
                        # lint:ignore:80chars
                        fail("Module ${module_name} is not supported on ${::operatingsystem}")
                        # lint:endignore
                    }
                }
            } else {
                # We'll stop the daemon if we're running inetd
                $service_state = 'stopped'

                case $::operatingsystem {
                    'centos','fedora','opensuse','redhat': {
                        exec { 'configure-tftpd-inetd':
                            path    => [ '/bin', '/usr/bin/', '/sbin' ],
                            command => '/sbin/chkconfig tftp on',
                            # lint:ignore:80chars
                            unless  => [ 'test `chkconfig --list | grep -c "tftp:.*on"` -eq 1' ],
                            # lint:endignore
                            require => Package[$server_package],
                        }
                    }
                    'debian', 'ubuntu': {
                        exec { 'configure-tftpd-inetd':
                            path    => [ '/usr/bin/', '/usr/sbin' ],
                            command => '/usr/sbin/update-inetd --enable tftp',
                            # lint:ignore:80chars
                            onlyif  => [ '/usr/bin/test -f /etc/inetd.conf && /usr/bin/test -f /usr/sbin/update-inetd' ],
                            # lint:endignore
                            require => Package[$server_package],
                        }
                    }
                    default: {
                        # lint:ignore:80chars
                        fail("Module ${module_name} is not supported on ${::operatingsystem}")
                        # lint:endignore
                    }
                }
            }

            # Reload the service if the configuration changed
            service { 'tftp-service':
                ensure  => $service_state,
                name    => 'tftpd-hpa',
                start   => $service_start_command,
                stop    => $service_stop_command,
                status  => $service_status_command,
                require => [
                    Package[$server_package],
                    Exec['configure-tftpd-inetd'],
                    File[$defaults_config_file],
                    File[$tftproot],
                    File[$service_init_script],
                    User[$user],
                    Group[$group],
                ],
            }
        }

        'absent': {
            # Stop the service
            service { 'tftp-service':
                ensure => 'stopped',
                enable => false,
                name   => 'tftpd-hpa',
                start  => $service_start_command,
                stop   => $service_stop_command,
                status => $service_status_command,
            }

            # Remove the defautlts file
            file { $defaults_config_file:
                ensure  => 'absent',
                before  => Package[$server_package],
                require =>  Service['tftp-service'],
            }

            # Remove the init file
            file { $service_init_script:
                ensure  => 'absent',
                before  => File[$tftproot],
                require =>  Service['tftp-service'],
            }

            # Remove the tftproot
            file { $tftproot:
                ensure  => 'absent',
                force   => true,
                before  => Package[$server_package],
                require =>  Service['tftp-service'],
            }

            # Remove the package
            if ( ! defined( Package[$server_package] )) {
                package { $server_package:
                    ensure  => 'purged',
                    require =>  Service['tftp-service'],
                }
            }

            # Remove the daemon user
            user { $user:
                ensure  => 'absent',
                require => Package[$server_package],
            }

            # Remove the daemon group
            group { $group:
                ensure  => 'absent',
                require => [
                    Package[$server_package],
                    User[$user],
                ],
            }
        }

        default: {
            fail( 'ensure must be "absent" or "present"' )
        }
    }
}